The Aegean Islands (Greek: Νησιά Αιγαίου, translit.Nisiá Aigaíou; Turkish: Ege Adaları) are the group of islands in the Aegean Sea, with mainland Greece to the west and north and Turkey to the east; the island of Crete delimits the sea to the south, those of Rhodes, Karpathos and Kasos to the southeast. The ancient Greek name of the Aegean Sea, Archipelago (ἀρχιπέλαγος, archipelagos) was later applied to the islands it contains and is now used more generally, to refer to any island group.

The vast majority of the Aegean Islands belong to Greece, being split among nine administrative regions. The only sizable possessions of Turkey in the Aegean Sea are Imbros (Gökçeada) and Tenedos (Bozcaada), in the northeastern part of the Sea. Various smaller islets off Turkey's western coast are also under Turkish sovereignty.

Most of the islands enjoy warm summer temperatures and cold winter temperatures, influenced by the Mediterranean climate.